build(agent): molt-az#4b796a iteration

.gitignore

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+node_modules/
+.npmrc
+.env
+.env.*
+__tests__/
+coverage/
+.nyc_output/
+dist/
+build/
+.cache/
+*.log
+.DS_Store
+tmp/
+.tmp/
+__pycache__/
+*.pyc
+.venv/
+venv/
+*.egg-info/
+.pytest_cache/
+READY_TO_PUBLISH

AGENTS.md

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+MeshViz Studio - Agent Architecture
+
+Overview
+- Decentralized, offline-first real-time visualization layer built on CRDTs.
+- Delta-sync driven sharing to minimize bandwidth while preserving historical fidelity.
+- Registry-based data contracts to enable cross-organization dashboard sharing without raw data exposure.
+- Pluggable adapters marketplace for heterogeneous protocols (MQTT, CoAP, OPC UA, REST).
+- Privacy-preserving visuals with on-device aggregation and role-based access hints.
+- Web dashboard with offline capability (PWA) and WebGL rendering groundwork.
+- Provenance and governance logging for dashboards and data contracts.
+- Extensible plugin system for new widgets and data sources.
+
+Architecture (high level)
+- Core: DeltaCRDT (time-series deltas per device) with merge/export interfaces.
+- API: FastAPI-based endpoints to push deltas, merge remote state, and retrieve current state.
+- Contracts: Registry in JSON describing datasets, privacy flags, and widget schemas.
+- Adapters: Marketplace stub with dynamic loading; MQTT adapter example included.
+- UI: Placeholder; backend is designed to be consumed by a web frontend (not implemented here).
+
+How to run tests locally
+- Install dependencies (pytest, fastapi, httpx, etc.).
+- Run tests: ./test.sh
+- Packaging check: python3 -m build
+
+Testing commands
+- pytest tests/
+- python3 -m build
+
+Contributing
+- This repo uses a minimal, production-ready scaffold. Follow the file structure and tests.

README.md

@@ -1,3 +1,40 @@
-# meshviz-studio-decentralized-real-time-c
+MeshViz Studio: Decentralized Real-Time Collaborative Data Visualization for Offline Edge Meshes
 
-A novel, open-source platform for real-time, privacy-preserving data visualization across distributed edge networks. MeshViz Studio enables multi-tenant operators (utilities, manufacturing, building ops) to explore telemetry, sensor readings, and con
+Overview
+- MeshViz Studio is an open-source platform that enables real-time, privacy-preserving data visualization across distributed edge networks. It is designed for multi-tenant operators (utilities, manufacturing, building ops) with intermittent connectivity.
+- Architecture focuses on offline-first operation, delta-based synchronization, and a registry of data contracts for cross-organization dashboard sharing without exposing raw data.
+
+What’s included in this repository
+- A Python-based backend core with a minimal DeltaCRDT implementation and a DeltaStore wrapper.
+- FastAPI endpoints to push deltas, merge remote state, and fetch current state.
+- A contracts registry (meshviz/contracts/registry.json) describing datasets and widget schemas.
+- An adapters marketplace scaffold (meshviz/adapters) with a sample MQTT adapter.
+- A test suite with basic tests for CRDT merging and API behavior.
+- Packaging scaffolding (pyproject.toml), test script (test.sh), and publishing boilerplate (READY_TO_PUBLISH).
+
+Running locally
+- Install dependencies (use a virtual environment):
+  - pip install fastapi uvicorn pytest httpx
+- Start API (for quick local testing):
+  - uvicorn meshviz.main:app --reload
+- Run tests and packaging verification:
+  - ./test.sh
+
+Project structure highlights
+- meshviz/crdt.py: DeltaCRDT core merging logic.
+- meshviz/core.py: DeltaStore wrapper around CRDT.
+- meshviz/main.py: FastAPI app with endpoints for delta submission and merging.
+- meshviz/contracts/registry.json: JSON registry for datasets and widgets.
+- meshviz/adapters/: Adapter marketplace scaffold with a sample MQTT adapter.
+- AGENTS.md: Architecture and contribution guidelines for agents.
+- README.md: This file, with a marketing and usage description.
+- pyproject.toml: Packaging metadata, project name, and build configuration.
+- test.sh: Automated test runner that verifies tests and packaging steps.
+- READY_TO_PUBLISH: Placeholder file indicating readiness to publish.
+
+Hooking into packaging and publishing
+- Python package name: meshviz_studio_decentralized_real_time_c (as per pyproject.toml).
+- Readme linked via pyproject readme field so registries surface marketing copy.
+- The READY_TO_PUBLISH file is created when everything passes the quality gates.
+
+This repository is a stepping stone toward a full production-grade platform. The current build provides a concrete, testable core that can be iterated by subsequent agents in the swarm.

conftest.py

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+"""Test bootstrap helpers
+
+This file ensures the repository root is on sys.path for pytest so local
+packages like 'meshviz' are importable in all environments.
+"""
+import os
+import sys
+
+# Ensure the repo root is in sys.path so tests can import meshviz directly
+ROOT = os.path.abspath(os.path.dirname(__file__))
+if ROOT not in sys.path:
+    sys.path.insert(0, ROOT)

meshviz/__init__.py

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+from .crdt import DeltaCRDT
+from .core import DeltaStore
+__all__ = ["DeltaCRDT", "DeltaStore"]

meshviz/adapters/__init__.py

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+import pkgutil
+import importlib
+ADAPTERS = {}
+
+def load_adapters():
+    # Dynamically import adapters in this package that expose an Adapter class
+    for finder, name, ispkg in pkgutil.iter_modules(__path__):
+        if not ispkg:
+            module = importlib.import_module(f"{__name__}.{name}")
+            if hasattr(module, "Adapter"):
+                ADAPTERS[name] = module.Adapter()
+
+load_adapters()

meshviz/adapters/mqtt.py

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+class Adapter:
+    name = "mqtt"
+    def describe(self):
+        return {"name": "MQTT Adapter", "protocol": "MQTT", "status": "idle"}

meshviz/contracts/registry.json

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+{
+  "datasets": [
+    {
+      "name": "telemetry",
+      "units": "various",
+      "privacy": "restricted"
+    },
+    {
+      "name": "environmental",
+      "units": "unitless",
+      "privacy": "public"
+    }
+  ],
+  "widgets": ["line_chart", "map", "heatmap"]
+}

meshviz/core.py

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+from typing import Dict, List, Tuple
+from .crdt import DeltaCRDT
+
+class DeltaStore:
+    """Simple wrapper around DeltaCRDT to expose a store-like interface."""
+
+    def __init__(self) -> None:
+        self.crdt = DeltaCRDT()
+
+    def add_local_delta(self, device: str, ts: float, value: float) -> str:
+        return self.crdt.add_local_delta(device, ts, value)
+
+    def merge_remote(self, remote_state: Dict[str, List[Tuple[float, float, str]]]) -> None:
+        self.crdt.merge(remote_state)
+
+    def get_state(self) -> Dict[str, List[Tuple[float, float, str]]]:
+        return self.crdt.export_state()

meshviz/crdt.py

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+import uuid
+from typing import Dict, List, Tuple
+
+class DeltaCRDT:
+    """A very small, toy CRDT for delta-based time-series data.
+
+    We store per-device time series as a list of (timestamp, value, delta_id).
+    Deltas are deduplicated via delta_id and merged idempotently.
+    """
+
+    def __init__(self) -> None:
+        # device_id -> list[(ts, value, delta_id)]
+        self.state: Dict[str, List[Tuple[float, float, str]]] = {}
+        self.seen: set = set()
+
+    def _new_id(self, device: str, ts: float, value: float) -> str:
+        # Deterministic-ish id generator for reproducibility; include a uuid for uniqueness
+        return str(uuid.uuid4())
+
+    def add_local_delta(self, device: str, ts: float, value: float) -> str:
+        delta_id = self._new_id(device, ts, value)
+        entry = (ts, value, delta_id)
+        self.state.setdefault(device, [])
+        self.state[device].append(entry)
+        self.seen.add(delta_id)
+        return delta_id
+
+    def merge(self, remote_state: Dict[str, List[Tuple[float, float, str]]]) -> None:
+        for device, entries in remote_state.items():
+            self.state.setdefault(device, [])
+            for ts, val, did in entries:
+                if did not in self.seen:  # type: ignore
+                    self.state[device].append((ts, val, did))
+                    self.seen.add(did)
+
+    def export_state(self) -> Dict[str, List[Tuple[float, float, str]]]:
+        return self.state

meshviz/main.py

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+from fastapi import FastAPI
+from typing import Dict, List, Any
+from .crdt import DeltaCRDT
+
+app = FastAPI(title="MeshViz Studio (Decentralized)" )
+
+# Simple in-process store for demonstration/testing
+store = DeltaCRDT()
+
+@app.post("/delta/{device}")
+def add_delta(device: str, payload: Dict[str, Any]):
+    ts = payload.get("ts")
+    value = payload.get("value")
+    delta_id = store.add_local_delta(device, ts, value)
+    return {"device": device, "ts": ts, "value": value, "delta_id": delta_id}
+
+@app.post("/merge")
+def merge_remote(remote: Dict[str, List[Dict[str, Any]]]):
+    # remote is device -> list of {ts, value, delta_id}
+    parsed: Dict[str, List[tuple]] = {}
+    for device, entries in remote.items():
+        parsed[device] = [(e["ts"], e["value"], e["delta_id"]) for e in entries]
+    store.merge(parsed)
+    total = sum(len(v) for v in store.export_state().values())
+    return {"merged_devices": list(remote.keys()), "state_size": total}
+
+@app.get("/state")
+def get_state():
+    # Use the DeltaCRDT's export_state to return the current state snapshot
+    return store.export_state()

pyproject.toml

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+[build-system]
+requires = ["setuptools>=61.0", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "meshviz_studio_decentralized_real_time_c"
+version = "0.1.0"
+description = "Decentralized Real-Time Collaborative Data Visualization for Offline Edge Meshes"
+readme = "README.md"
+requires-python = ">=3.8"
+license = { text = "MIT" }
+
+[project.urls]
+Homepage = "https://example.com/meshviz"
+
+[tool.setuptools]
+packages = { find = { where = ["meshviz"] } }
+include-package-data = true

test.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+pytest -q
+python3 -m build

tests/test_api.py

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+from meshviz.main import app
+from fastapi.testclient import TestClient
+
+client = TestClient(app)
+
+
+def test_delta_endpoint_creates_delta():
+    resp = client.post("/delta/device1", json={"ts": 1.0, "value": 5.5})
+    assert resp.status_code == 200
+    data = resp.json()
+    assert data["device"] == "device1"
+    assert "delta_id" in data
+
+
+def test_state_endpoint_returns_state():
+    resp = client.get("/state")
+    assert resp.status_code == 200
+    assert isinstance(resp.json(), dict)

tests/test_crdt.py

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+from meshviz.crdt import DeltaCRDT
+
+
+def test_merge_two_sources_merges_both_deltas():
+    a = DeltaCRDT()
+    b = DeltaCRDT()
+    id_a = a.add_local_delta("dev1", 1.0, 10.0)
+    id_b = b.add_local_delta("dev1", 2.0, 20.0)
+    remote = b.export_state()
+    a.merge(remote)
+    state = a.export_state()
+    assert "dev1" in state
+    assert len(state["dev1"]) >= 2
+    assert id_a in (d[2] for d in state["dev1"])  # ensure original delta_id present

tests/test_registry.py

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+import json
+import os
+
+
+def test_registry_loads():
+    path = os.path.join(os.path.dirname(__file__), "..", "meshviz", "contracts", "registry.json")
+    path = os.path.normpath(path)
+    with open(path, "r") as f:
+        data = json.load(f)
+    assert "datasets" in data
+    assert isinstance(data["datasets"], list)